They picked names with very strong and contrasting images, which seems a little unfair right off the bat - like if you heard of two sisters named
Gertrude and
Tiffany, you get two very different mental images.
Elanor Anne is lovely, but she sounds like a spinster librarian next to down-home Daisy-Duke wearin' sister
Betty Jo.
Even tweaking it just a tad to, say,
Ellie Anne and
Betty Jo, Or
Elanor Anne and
Elizabeth Joan would have made them a little more cohesive. I like both names separately, but together they just don't fit!